MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS
Time period: 05/01/00 through 05/31/00
1.0 SUMMARY STATISTICS
_______________________
Relative use of INSPEC databases:
Number of
Searches Records Presented
________ _________________
INS (current) 41,704 1,054,101
INS90 7,600 88,972
INS85 5,937 46,435
INS80 5,165 27,931
INS69 5,246 43,754
Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,507 46,404
2-4 a.m. 715 18,267
4-6 a.m. 347 5,536
6-8 a.m. 564 17,806
8-10 a.m. 3,406 74,024
10-12 a.m. 13,260 175,499
12-2 p.m. 10,943 188,468
2-4 p.m. 11,175 237,713
4-6 p.m. 11,368 236,800
6-8 p.m. 5,310 127,648
8-10 p.m. 4,144 71,563
10-12 p.m. 2,913 61,465
__________ _____________ _________________
Total: 65,652 1,261,193
1.1 SEARCH commands
____________________
Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 15,175
Davis 63
Irvine 89
Los Angeles 34
Riverside 2
San Diego 462
San Francisco 11
Santa Barbara 170
Santa Cruz 10
Lawrence Berkeley 95
Lawrence Livermore 52
Los Alamos 0
MELWEB 47,551
Searchlight 1,622
Other - UC 43
Other-Network UC 273
_____
65,652
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 44,597
Davis 120
Irvine 694
Los Angeles 400
Riverside 0
San Diego 3,407
San Francisco 289
Santa Barbara 1,871
Santa Cruz 49
Lawrence Berkeley 774
Lawrence Livermore 624
Los Alamos 0
MELWEB 1,188,030
Searchlight 14,361
Other - UC 0
Other-Network UC 5,977
_____
1,261,193
1.3 Response time
__________________
Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 2.3
Standard deviation in seconds 9.8
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.6
Standard deviation in seconds 1.1
2.0 INSPEC Databases Detailed Statistics
_________________________________________
Median session length (minutes:seconds) 21:49
Average session length (minutes:seconds) 21:02
Longest session recorded (minutes:seconds) 177:23
Average number of searches completed per session 0.0
Retrievals per search - median 4.0
Retrievals per search - average 412.4
Retrievals per search - standard deviation 3634.8
Percent of searches completed with 0 results 30.9%
Percent of searches entered that are long 0.6%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 65,652 20.7%
PRESENT 224,328 70.9%
INIT or CLOSE 25,968 8.2%
OTHER 601 0.2%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 19,179 21.1% 5,698 29.7% 9 74.5 892.6
TITLE WORD 12,026 13.2% 4,639 38.6% 4 87.7 1619.5
EXACT TITLE 953 1.0% 445 46.7% 1 18.3 146.1
JOURNAL 2,837 3.1% 1,310 46.2% 8 1206.3 6490.8
EXACT JOURNAL 845 0.9% 363 43.0% 255 2902.0 7694.9
SUBJECT 7,207 7.9% 2,343 32.5% 140 1417.2 3164.2
EXACT SUBJECT 10,845 11.9% 4,086 37.7% 24 546.3 1767.8
THESAURUS 42 0.0% 25 59.5% 2 1743.3 6454.8
EXACT THESAURUS 216 0.2% 56 25.9% 24 1372.4 9764.7
KEYWORD 28,639 31.5% 8,255 28.8% 22 755.9 5876.5
SUBFILE 134 0.1% 22 16.4% 32 190.7 493.9
FORM 774 0.9% 211 27.3% 19 390.1 2369.6
DATE 521 0.6% 141 27.1% 21 112.4 282.4
ADDED 382 0.4% 254 66.5% 5 18.7 33.5
ARTICLE 63 0.1% 19 30.2% 19 252.6 643.4
AUTHOR AFFIL. 532 0.6% 257 48.3% 13 266.7 1394.7
CONFERENCE 85 0.1% 34 40.0% 66 459.4 1004.4
LANGUAGE 1,880 2.1% 455 24.2% 33 464.6 2001.5
CHEMICAL NAME 392 0.4% 229 58.4% 9 54.5 168.2
ISSN 3 0.0% 3 100% 0 0.0 0.0
ISBN 2 0.0% 2 100% 0 0.0 0.0
ID NUMBER 0 0.0% 0 0.0% 0 0.0 0.0
PRODUCT NUMBER 6 0.0% 6 100% 0 0.0 0.0
STANDARD NUMBER 4 0.0% 4 100% 0 0.0 0.0
ISN 0 0.0% 0 0.0% 0 0.0 0.0
AT 3,218 3.5% 1,024 31.8% 16 459.9 2782.8
Other indexes 11 0.0% 10 90.9% 2 2.0 0.0
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 22,239 33.9% 8,561 38.5% 12 412.7 2487.6
Single 43,413 66.1% 11,723 27.0% 16 676.3 4951.9
PRESENT commands, by type:
MARC 41.1%
OPAC 35.6%
SINmm/dd srv.ins MELSRV INSPEC DATABASES Z39.50 SERVER STATISTICS (weekly)